First: Some agencies want a minimum of 5000px on the long side, but for most 4000 will do.
2nd: AFAIK all agencies want illustrator 8 or 10 compatible eps files
3rd: For Fotolia and Pond5 you have to put eps and jpg into a zip-archive, mostphotos wants the eps only, dreamstime wants the jpg first, then you can add eps as additional file (or, via FTP, there's an extra folder for the eps). At the other agencies you can submit both files at the same time, but they must have the same filename (except for the ending .eps or .jpg respectively)

Hope that helps

Where do you tell this to them on IS?

Is this one of the places where two files, same name, on EPS one JPG or how does IS work uploads using DM for Vectors?

Are there any sites that accept PNG files with transparent backgrounds?

Hello,

better save the jpeg file as 300dpi with Photoshop than using 'save to web' which will create a 72dpi image (5000 px minimum for the long size also).
When submitting to iStock, don't forget to tell if the EPS is v8 or 10. They may reject it if you don't mention...
Good luck

Where do you tell this to them on IS?

Is this one of the places where two files, same name, on EPS one JPG or how does IS work uploads using DM for Vectors?

Are there any sites that accept PNG files with transparent backgrounds?

Yes 2 files with exactly same name. On iStock in the description field you can mention infos, technical details etc... They recognize IPTC metadata that you can use with the jpeg file.
Don't know about the png but you can put a png version next to the jpeg and eps file in many micro.

It depends. On Veer they want a larger file, but iS and SS will accept 4000x4000 or 3000x5000 or similar. I was saving smaller so SS would accept it rather than rejecting for "poorly rasterized," because the larger the file the more likely "OOF" or "PR" rejections seem. But if you're not uploading a second copy of the jpg (they allow you to sell both formats separately) then the larger size is fine.

[rant] And now, a quick rant once again about how ridiculous those "poorly rasterized" rejections are, because SS offers the option to license the jpg instead of the eps now, and it's exactly the same jpg they reject as "poorly rasterized" if you upload it separately, yet the quality is perfectly acceptable if the buyer just clicks a different button. [/rant]

Thanks and yes I should know better about the size difference MP vs MB. Must have been getting late. 

I wasn't thinking that the buyers would be looking at both, I'm just trying to look into uploading Vectors. I'll keep that in mind.

Not sure that any of the images marked "Illustrations" on IS are the vector versions. I think I'll stick to rasters for now.

Sorry about the Hijack, hopefully it's enough on the same subject as the OP was things the OP was asking about.

Quote from: Uncle Pete on March 06, 2015, 10:55

So the same question as the OP. I should be saving the JPG as 5000 pixels on a side? That's rather large isn't it? Assuming it's only a square that would be a 25MB file? If photo ratio, even larger. Over the file upload size limit for some sites.

That's not 25MB but 25MP, which is usually much less in bytes due to JPG compression. I never had an accompanying jpg above the file size limit - yet I sometimes have to reduce details in the illustration to get the eps below 15MB

And while we're at it, all formats that are not square are smaller than that, when the LONG side is 5000px